Phys. Rev. Lett. 99, 127004 (2007) [4 pages]Neél Order in Square and Triangular Lattice Heisenberg ModelsReceived 22 May 2007; published 20 September 2007 We show that the density matrix renormalization group can be used to study magnetic ordering in two-dimensional spin models. Local quantities should be extrapolated with the truncation error, not with its square root. We introduce sequences of clusters, using cylindrical boundary conditions with pinning fields, which provide for rapidly converging finite-size scaling. We determine the magnetization for both the square and triangular Heisenberg lattices with errors comparable to the best alternative approaches. © 2007 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.99.127004
DOI:
10.1103/PhysRevLett.99.127004
PACS:
74.45.+c, 71.10.Pm, 74.50.+r
|
|
About | Terms and Conditions | Subscriptions | Search | Help
Use of the American Physical Society websites and journals implies that the user has read and agrees to our Terms and Conditions and any applicable Subscription Agreement. Physical Review®, Physical Review Letters®, Reviews of Modern Physics®, and Physical Review Special Topics® are trademarks of the American Physical Society.